# Steam Turbines Questions and Answers – Pressure Coefficients and Slip Factor

This set of Steam and Gas Turbines Multiple Choice Questions & Answers (MCQs) focuses on “Pressure Coefficients and Slip Factor”.

1. Fluid slip in the impeller can be measured by ____________
a) Pressure coefficient
b) Slip factor
c) Pressure coefficient & Slip factor
d) None of the mentioned

Explanation: Fluid slip in the impeller can be measured by slip factor.

2. Deviation in the angle of the fluid leaving the impeller is called as _________
a) slip factor
b) pressure rise
c) fluid slip
d) none of the mentioned

Explanation: The deviation in the angle of the fluid leaving the impeller is called fluid slip.

3. In axial impellers fluid slip is ______
a) Small
b) Large
c) Medium
d) None of the mentioned

Explanation: In axial impellers fluid slip is quite small.

4. In radial impellers fluid slip is _________
a) Small
b) Large
c) Medium
d) None of the mentioned

Explanation: In radial impellers fluid slip is large.

5. Back eddy is also responsible for ___________
a) slip factor
d) none of the mentioned

Explanation: Back eddy is also responsible for slip factor.
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a) back eddy
b) slip factor
c) back eddy & slip factor
d) none of the mentioned

7. Working fluid viscosity is also responsible for _________
a) slip factor
c) back eddy
d) none of the mentioned

Explanation: Working fluid viscosity is also responsible for slip factor.

8. Boundary layer blockage is responsible for __________
a) back eddy
c) slip factor
d) none of the mentioned

Explanation: Boundary layer blockage is also responsible for slip factor.

9. Slip factor is the ratio of ideal whirl velocity to actual whirl velocity.
a) True
b) False

Explanation: Slip factor is the ratio of actual whirl velocity to the ideal whirl velocity.

10. When blade angle decreases slip factor also __________
a) decreases
b) remains constant
c) increases
d) none of the mentioned

Explanation: When blade angle decreases slip factor increases.

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